CH_ 3 -CH_ 2 -CN (CH_ 3 MgBr, Ether) A (H_ 3 O^ + ) B (Zn–Hg, HCl) C. The correct structure of C is

JEE Main 2022 Chemistry question

CH_{3}-CH_{2}-CN \to (CH_{3}MgBr, (Zn–Hg, . The correct structure of C is

Answer: (A)

The Grignard reagent adds to the nitrile to give the imine salt A, CH_{3}CH_{2}C(=NMgBr)CH_{3}, which on hydrolysis gives

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Question ID VK-024699